[Beowulf] malloc on filesystem

[Michael DiDomenico]

this might sound like a bit of an oddify, but does anyone know if
there's a library out there that will let me override malloc calls to
memory and direct them to a filesystem instead?  ie using the
filesystem as memory instead of ram for a program.  ideally something
i can LD_PRELOAD on top of a static binary.  understandably this is
generally a silly thing to do, but you know, users...

google is failing me, my search terms likely aren't right.  i'm
looking through some of the older checkpointing codes at the moment.
maybe someone cut shortcut my search